Browsing by Author "L. K. Olatinwo"
Now showing 1 - 3 of 3
Results Per Page
Sort Options
- ItemAssessments of Sweet potato Virus Disease and Influence of Mulching and Organic Insecticide on Sweet Potato Varieties in Kwara State of Nigeria(2020) T. H. Aliyu; J. Popoola; L. K. Olatinwo; E. K. Eifediyi; O. Arogundade; B. H. TaiwoAssessments of 30 sweet potato farms in three districts of Kwara State of Nigeria were carried out to evaluate the incidence of sweet potato virus disease (SPVD). A serological study by Antigen-coated plate enzyme-linked immunosorbent assay (ACP-ELISA) was set up to assay six viruses on sweet potato samples. A field experiment to appraise the influence of variety, mulch and organic insecticide on virus incidence was performed on two genetically improved sweet potato varieties. The surveys revealed the occurrence of SPVD in all locations with incidence from 2.6% in Oyun (Kwara Central district) to 39.1% in Agbamu (Kwara South district). The serology test confirmed the predominance of Sweet potato feathery mottle virus (SPFMV) and Sweet potato chlorotic stunt virus (SPCSV) correspondingly as 100% and 30% respectively in the study. The field experiment indicated lower virus disease incidence (15.3%) and increased numbers in storage roots (7.5/plant) and weight of storage roots (32.4 kg/plant) in Orange Fleshed Sweet Potato variety, mulched with organic insecticidal treatment. This is the first authentication of the occurrence and prevalence of sweet potato virus disease in Kwara State, Nigeria. The study recommends Orange Fleshed Sweet Potato variety, mulching with guinea corn stalk and organic insecticide application for sustainable management of SPVD, particularly for resource-poor farmers.
- ItemFarmers’ Knowledge and Adoption of Soil Conservation Practices in North Central Nigeria: An Index-based Approach(2020) A.K. Daudu; F. O. Oladipo; W. O. Kareem; L. K. OlatinwoSoil is the most crucial resource on which agriculture is based. Proper management of this valuable resource is vital to sustain long-term agricultural productivity. Farmers’ knowledge level and adoption of soil management practices have influenced agricultural productivity. This study therefore, investigated the farmers’ knowledge gap and adoption of soil conservation practices in North Central Nigeria. A four-stage random sampling technique was adopted for selecting 960 respondents from all the six states for the study. Structured questionnaire and interview schedule were used to elicit information from the respondents. Data collected were analyzed with both descriptive and inferential statistics such as frequency counts, percentages, and mean, standard deviation, and knowledge gap and adoption indexes. The overall results for the six states showed that 45.3% had low knowledge gap, 43.4% had medium knowledge gap, and only 11.3% had high and wider knowledge gap of soil conservation practices. Benue have the largest (52.3%) number of farmers with the lowest knowledge gap on soil conservation practices. Results showed that 37.2 and 38.6% of respondents had low and moderate adoption rate, respectively, while only 24.2% had high adoption rate of soil conservation practices. State-wise, Benue (0.74) had the highest adoption rate while Kogi (0.33) had the lowest. Adoption rate of soil conservation practices is significantly influenced by farmers’ knowledge level at varying degree. It is concluded that farmers’ knowledge gap and adoption of soil conservation practices ranges between low and medium with wide knowledge gap were found mostly in the areas of terracing, contour farming, conservation tillage, and vegetative barriers. The study recommend that training with result demonstration through agricultural extension services should be organized for farmers on soil conservation practices to bridge their knowledge gap, especially in the areas where wider gap was found and increases its adoption.
- ItemSeverity of Viral Diseases and Types of Weeds as Alternative Viral Hosts in <em>Dioscorea</em> Fields in Southern Guinea Savannah Agroecology of Nigeria(2021) T. H. Hussein Aliyu; F. O. Takim; L. K. Olatinwo; O. Arogundade; K. F. Funmilayo Omotesho; D. A. OladojaThe incidence and severity of viruses infecting yam and weeds were determined on 60 Dioscorea farms in Southern Guinea Savannah Agroecology of Kwara State, North-Central Nigeria. Double Antigen Sandwich Enzyme Linked Immunosorbent Assay (DAS ELISA) was used as a serological technique to detect Yam mosaic virus (YMV) and Cucumber mosaic virus (CMV) on Dioscorea and weeds collected from the farms. The survey indicated virus incidence on Dioscorea between 62.8% and 100% and virus severity between 2 and 5 score values. DAS-ELISA detected YMV in all the Dioscorea leaf samples and mixed infection of YMV with CMV in 13 samples. Twenty-nine (29) weed species were found to be predominant on Dioscorea fields which comprised of annuals and broadleaves. DAS-ELISA revealed high YMV titer values for the weed species, Eclipta alba, Euphorbia heterophylla, Oldenlandia herbacea, Cynodon dactylon and Phyllantus amarus. However, CMV was not found in any of the sampled weed species. The study showed a high occurrence of viruses on Dioscorea and the preponderance of weeds which could serve as vectors of viruses. There is a need for efficient management strategies for virus and weed elimination within and around yam fields which will invariably be an attraction to farmers with limited resources for optimum yam production.